I like winding down with shitty old B movies or TV shows so the other night I watched "The Night the World Exploded" from 1957 (https://www.imdb.com/title/tt0050767/) It was a giant feast of "expert" worship and environmental paranoia that wouldn't be that out of place today.
Plot synopsis: a Top Scientist has invented a device to predict earthquakes. Amazingly enough, hours after completing the device, it's already picking up indications of a massive earthquake later that day. He is immediately given access to the governor who, begrudgingly, tells the Top Scientist that although he wants to, he can't evacuate cities and bring in the military on his say-so alone.
Naturally the earthquake happens, the governor apologizes, and brings in the Top Scientist to advise. Top Scientist warns that his device is already picking up major indications of imminent global catastrophe, and needs to bring in Top Scientists from around the world to enact a plan to save the planet.
Turns out that the earthquakes are being caused by mankind's extraction of resources. Mining and oil wells being the biggest problem. Naturally the Top Scientists are able to mobilize an effective worldwide campaign to prevent disaster, after being granted 100% authority over military resources.
The whole thing could have been written by a modern climate cultist, with carbon being the villain instead of earthquakes. The only thing that hasn't "aged well" by modern standards was that the lead actor and actress fall in love at the end. But the rest is naked agenda: human beings are destroying the planet, and we need to give dictatorial powers to "experts" to save us.
Marx's own behavior refutes the idea that he "cared about the people". You will not be able to find anyone who does, but in his case it was more obvious that in that of others.
His ideas were a logical outgrowth of his presuppositions. Namely that there would be ever greater concentrations of capital and that this would result in ordinary people being ever more immiserated. Ultimately, they would 'seize the means of production' so they and not just the owners of capital would benefit from it.
This was pretty crazy at the time that he proposed it, and while some people who admit that Marx was wrong still want to give him credit for exposing the bad conditions of working people - that mostly came from official documents and inquiries of the British government, many quite old even by that time.
However, the idea itself is not impossible. Just imagine a future where automation reaches such heights that the people who control general AI arrogate to themselves all surplus and ordinary people are left to starve because their labor isn't worth much anymore. I don't think it's likely, but it's not impossible. In that case, it is obvious what people would do.